Zum Verhalten von Olefinen, konjugierten Dienen und Steroidolefinen gegenüber Pb(OCOCF3)4
- 37 Downloads
- 6 Citations
Reactions of Pb(OCOCF3)4 with olefines, conjugated dienes and steroid olefines
Abstract
The reaction of Pb(OCOCF3)4 with several olefines and conjugated dienes is reported. The oxidation of styrene, stilbene and 1.4-dihydro-1.4-methanonaphthalene leads to phenylacetaldehyde (1), benzaldehyde (2) and benzophenone (3), and to 1.2.3.4-tetrahydro-1.4-methanonaphthalene-(2S,9R+2R,9S)-diol-bis-trifluoroacetate (8) respectively. Of the conjugated dienes, 1.3-cyclohexadiene yieldscis-2-cyclohexene-1.4-diol bis-trifluoroacetate (4), cyclopentadiene yieldscis-2-cyclopentene-1.4-diolbis-trifluoroacetate (5) andtrans-2-cyclopentene-1.4-diol-bis-trifluoroacetate (6) andE,E-2.4-hexadiene yields the isomers of 3-hexene-2.5-diol bis trifluoroacetate (7). Oxidation of unsaturated steroids such as 2-cholestene, 2-androsten-17-one, 4-cholestene, androsta-4.9(11)-diene-3.17-dione and 3β-acetoxy-5-cholestene results in cholestane-2α,3α-diol diacetate (9), 2α,3α-diacetoxyandrostan-17-one (10) and 1α-acetoxy-2-androsten-17-one (11), in coprostane-4β,5β-diol-4β-trifluoroacetate (12) or coprostane 4β,5β-diol-4β-acetate (12a), 4-cholestanone (13), in 12α-trifluoroacetoxyandrosta-4,9(11)-diene-3.17-dione (14), and in cholestane-3β,5α,6α-triol-3β-acetate-6α-trifluoracetate.
Preview
Unable to display preview. Download preview PDF.
Literatur
- 1.R. E. Partch, J. Amer. Chem. Soc.89, 3662 (1967).Google Scholar
- 2.J. R. Campbell, J. R. Kalman, J. T. Pinhey undS. Sternhell, Tetrahedron Lett.18, 1763 (1972).Google Scholar
- 3.J. R. Kalman, J. T. Pinhey undS. Sternhell, Tetrahedron Lett.52, 5369 (1972).Google Scholar
- 4.D. Westphal undE. Zbiral, im Druck.Google Scholar
- 5.F. Huber undM. S. A. El-Meligy, Z. anorg. allg. Chem.399 349 (1973).Google Scholar
- 6.K. B. Wiberg, Oxidation in Organic Chemistry, Vol. 5-A. New York-London: Acad. Press, und hieraus angeführte Referenzen.Google Scholar
- 7.G. E. Heasley, V. L. Heasley, S. L. Manatt, H. A. Day, R. V. Hodges, P. A. Kroon, D. A. Redfield, T. L. Rold undD. E. Williamson, J. Org. Chem.38, 4109 (1973).Google Scholar
- 8a.K. Alder, F. Flock undH. Wirtz, Chem. Ber.91, 609 (1958).Google Scholar
- 8b.J. Meinwald undG. A. Wiley, J. Amer. Chem. Soc.80, 3667 (1958).Google Scholar
- 9.H. B. Henbest undM. Smith, J. Chem. Soc. [London]1957, 926.Google Scholar
- 10a.J. F. Eastham, G. B. Miles undC. H. Krauth, J. Amer. Chem. Soc.81, 3114 (1959).Google Scholar
- 10b.D. Lavie, Y. Kashman undE. Glotter, Tetrahedron22, 1103 (1966).Google Scholar
- 11.D. H. R. Barton undW. J. Rosenfelder, J. Chem. Soc.1951, 1048.Google Scholar
- 12.E. Zbiral undH. Hugl, Tetrahedron29, 769 (1973).Google Scholar
- 13.V. Schwarz undS. Hermanek, Collect. Czech. Chem. Commun.29, 2360 (1964).Google Scholar
- 14.V. Prelog undE. Tagmann, Helv. chim. Acta27, 1867 (1944).Google Scholar